生鲜面常温贮藏过程中的品质变化规律

doi:10.7506/spkx1002-6630-201701043

食品科学

生鲜面常温贮藏过程中的品质变化规律

李运通，陈野*，李书红，姚珩，朱慧，陈玥

天津科技大学食品工程与生物技术学院，天津 300457

出版日期:2017-01-15 发布日期:2017-01-16

Quality Changes of Fresh Noodles during Room Temperature Storage

LI Yuntong, CHEN Ye*, LI Shuhong, YAO Heng, ZHU Hui, CHEN Yue

College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China

Online:2017-01-15 Published:2017-01-16

摘要/Abstract

摘要： 研究生鲜面贮藏过程中颜色、质地、蒸煮特性以及水分分布和微生物的变化，并进行相关性分析。结果表明，生鲜面在贮藏过程中表观指标表现为亮度变暗，硬度、剪切力和拉断力最终变小，蒸煮特性明显下降。采用低场核磁共振技术研究生鲜面中水分分布规律，得到在贮藏期间水分子与其他组分结合变得紧密，自由水含量、信号幅度显著增加（P＜0.05），促进弱结合水向自由水转变。此外，菌落总数和霉菌总数在贮藏期间均增长迅速。生鲜面的表观指标同内部变化有显著的相关性，在常温条件下贮藏24 h是生鲜面品质劣变的转折点。研究结果为生鲜面保鲜技术研究提供了一定指导依据。

关键词: 生鲜面, 常温贮藏, 保鲜, 水分分布

Abstract: The purpose of this work was to study the quality changes of fresh noodles in terms of color, texture, cooking
quality, water distribution and microbiological parameters during storage at room temperature. Besides, we also determined
the correlation among these quality characteristics. The results indicated that the brightness of fresh noodles declined during
the storage. The hardness, shear stress and tensile strength were lowered finally. In addition, cooking quality of fresh noodles
became worse. Low field nuclear magnetic resonance (LF-NMR) measurements showed that the binding between water
and other components became closer. Meanwhile, free water and signal amplitude were increased significantly (P < 0.05)
and the transformation of weakly bound water into free water was facilitated. Total colony number and total mold count
grew rapidly. A significant correlation existed between the exterior appearance and interior quality of fresh noodles. The
shift of fresh noodle quality occurred after 24 h of storage at room temperature. These findings can lay a foundation for the
preservation of fresh noodles.

Key words: fresh noodle, storage at room temperature, preservation, water distribution

中图分类号:

TS211.7

李运通，陈野，李书红，姚珩，朱慧，陈玥. 生鲜面常温贮藏过程中的品质变化规律[J]. 食品科学, doi: 10.7506/spkx1002-6630-201701043.

LI Yuntong, CHEN Ye, LI Shuhong, YAO Heng, ZHU Hui, CHEN Yue. Quality Changes of Fresh Noodles during Room Temperature Storage[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201701043.

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生鲜面常温贮藏过程中的品质变化规律

Quality Changes of Fresh Noodles during Room Temperature Storage

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